Lubricator



T. E. COLEMAN.

. LUBRIGATOR.

APPLICATION FILE[1'SEPT.2l 1920. 1,429,191. Y PatentdSpt- 12, 1922.

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T. E. COLEMAN.

LUBRICATOR.

APPLICATIGN FILED. SEPT. 2. 1920.

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I. E. COLEMAN.

LUBRICATOR.

APPLICATION FILED s EPT.2. |920.

Patented sept. 12, 1922.

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Patented Sept.'l2, 1922.

UNiTEo STATES PATENT ori-icso THOMAS E. COLEMAN, OF MADISONAWISCONSIN, ASSIGNOR TO- MDISON-KIPP COR- PORATION, 0F MADISON, WISCONSIN, A CORPORATION 0F WISCONSIN.

LUBRICATOR.

Application led September 2, 1920. Serial No. 407,641.

To all whom t may concern:

Be it known that I, THOMAS E. COLEMAN, a citizen ofthe.- United States, residing at Madison, in the county of Dane and State of plurality of pumps or units is employed tov force the oil to the separate or various points to be lubricated.

The -invention has for one of its objects a construction which enables one to readily a;

withdraw at one and the same time from the combined casing and reservoir all of the operative units, when for one or'another reason such withdrawal becomes necessary or desirable, and this without the displacement of the power and the manually actuated shafts through the operation of either of which the mechanism is operated.

A further object ofV the invention is to provide a special form of ratchet drive for the actuating mechanism, the construction being such that the possibility of nonoperation is reduced to a minimum.

A still further object is to provide a special form of eccentric mechanism or actuating the pump elements. u

lVith these 'and other objects in view reference will be had to the annexed drawings, wherein,-

Fig. 1 is a sectional elevation of the structure wherein two pumping or forcing units are disclosed;

Fig. 2 is a vertical longitudinal sectional view;

Fig. 3 is a transverse vertical sectional View;

Fig. 4 is a detail sectional elevation illustrative of the ratchet mechanism; i' Fig. 5 is a similar view of one of the pump elements and the allied volume controlling means;

Figs. 6 and 7 horizontal sectional views i taken through the pump units and showing the parts in dilerent positions;

Fig, 8 is a perspective view of the adjustable sleeve employed to control the volume of.y oil which maybe ejected by the piston;

Fig. 9 is a similar view of one of the pistons;

Fig. 10 a perspective view of a modified form of one of the pistons; Y

Fig. l1 a transverse sectional view thereof on the line XI-XI of Fig. 10.

Figs. 12 and 13 sectional elevations showing such a piston in its diierent operative posltions;

Fig. 14 a side elevation of a modified form of eccentric; f

Fi i. 15 a transverse sectional view on the line V-XV of Fig. 14; and

Fig. 16 a perspective view of the two strap elements.

The employment of a plurality of pump units is contemplatedythe units being alike i'n form and in operation and while only two are shown it will be readily appreciated that one or more may be employed and that any number may be connected up and actuatedby the operating mechanism common to all.

In the drawings, and referring first to Figs. l to 9 inclusive, 1 denotes the combinedreservoir and casing preferably provided with attaching lugs 2 whereby the structure may be secured in position. The cover, which is made suiiiciently heavy to be rigid and firm, is denoted by 3 and forms the support for the pump elements, the bodies of which are denoted generally by 4. Inasmuch as the pumps are alike in form the various parts will be similarly lettered. Said bodies are directly secured to the inner face of the cover by plug screws 5 which hold the bodies firmly in place and close the openings in the cover through which the screws extend. A cylinder 6 is formed in the body, said cylinder being provided with a port 7 (Fig. 3) which opens into a conduit 8 formed in the body casting. tting 9 is screwed into the upper enlarged end of the passage and a pipe 10 extends therefrom to the part to be lubricated. A jam or lock nut Vl1 holds the fitting in position and the ltting also assists in securing the casting or body 4 to the cover 3.

A. ylateral extension 12 is formed on the b'ody 4,-said extension being bored to provide a passage 13 opening into the cylinder and producing a cylinder port 14 opposite port 7. An intake pipe 15 provided with a strainer 16 at its lower end is screwed into an opening 17 which communicates with the passage 13. v

Mounted within the. cylinder for cndwise adjustment is arsleeve 18 (Fig. 8) which varies or controls the volume of oil which may be ejected by the pump piston 19 at each stroke. Said sleeve is provided with oppositely disposed elongated ports 2Ov and 21, and a third elongated spill-way port 22 which is in register with a port 23 formed through the side of the cylinder.

Secured to the lower end of the sleeve is` an arm 24. having two threaded openings 25 and 26 formed therein. A stem 27 is threaded into opening 25, said stem passing freelythrough a bracket 28 extending from body 4 and being held against endwise move.

ment by collars 29 and 30 secured to the stem. At its upper end the stem is in operative engagement with a rotatable head or button 31 swiveled in the cover v3. A nut 32 is se ured to the lower end of the stem and underlies the arm.' 24. Threaded into opening 26 is a limiting stop taking the form of a bolt 33, (Fig. 5), the bolt passing freely through bracket 28 and susceptible of being turned in or out the arm 24 by the insertion of a suitable tool through an opening formed in the cover, which opening is normally closed by a plug 34; or said stop may be set'prior to the placement of the parts within the casing when it is desired, for instance, to prevent the parts from being so regulated that the pump cannot eject an `amount of oil below a predetermined minimum. By raising Sand' lowering the sleeve through manipulation of head 31 the amount of oil ejected at each impulse of the pump may be regulated and determined', as will presently appear.

Plston 19 is provided with a vertically disposed port or channel way 35, said way extending to the upper end of the piston 'or plunger, and at its lower end communicating with a circumferentiallydisposed 'way or channel 36, which in turn communicates with a short way or channel 37. Port or channel way 35 forms the intake for the pump and likewise with way 36 and way 37 forms the spill discharge channel for the cylinder. Plston 19 is also provided with a vertically disposed port or channel way 38 at its upper end through which the oil is forced from the cylinder on its way to the art to be lubricated.

'l xe vpistons or plungers are each operatwith the intake ed by a wabbling eccentric composed of two parts, 39 and 39a, which eccentric imparts an up and down movement to the piston and also an oscillatory movement, such double motion being transmitted through strap 40, yoke 41 and rocker block 42, which latter is pivotally mounted in the lower Slotted ends of the piston.

`With the parts in the position shown in Fig. 3 the piston or plunger is about to begin its downward intake stroke. At such time channel or way 35 is in communication pipe 15 through port 14 and port 20 in the sleeve 18. As the plunger moves downwardly it is given a partial rotation by the eccentric, the movement being most abrupt as the plunger reaches the bottom of its stroke so that groove 35 is carried out of line with the intake ports 14 and 20 and channel way 38 is brought into alinement with port 21 of the measuring sleeve 18 and port 7 (see Fig. 7 and the right hand pump unit Fig. 2). As the plunger is forced upwardly the oill passes from above the same downthrough way 38, through port 21 in sleeve 18 and port 7 to the point of discharge. Vlvhen the piston is elevated to such an extent that way 38 passes out of registry with the discharge ports, channel or way 37 passes into registry with the spillport 22 of Sleeve 18 and the oil above the piston passes down channel 35 into cross channel 36 and through channel 37, port 22 and port 23 back to the reservoir.

By moving or adjusting the measuring or control sleeve 18 upwardly a greater amount of oil is forced out of the discharge ports 21 and 7 than when the sleeve is lower, due to the fact that the'channel way 38 registers with these ports for a greater part of the upward or forcing stroke of the piston. Moreover the spill way channel 37 cannot register `with the spill ports 22 and 23 until the lower end of way 38 has passed above port 21', andl this occurs late in the upward vor impulse stroke of the piston owing to the fact that the ports in the sleeve occupy a relatively higher position. The elongated form of the ports 20, 21 and 22 in the sleeve 18 takes care of this action.

As will be seen upon reference to Fig. 2

the eccentric elements are mounted on a i porting pin` 63 agency of a spring ing crank 51 is mounted on the outer end of the shaft and through which the shaft ma be manually actuated when desired.

he opposite end of the shaft extends into a somewhat longer sleeve 52 journaled in a second hanger 53 which sleeve is in engagement with a cross rib 54 formed upon a head 55 of a second stub shaft 56 which is mounted in a bearing 57. A lever 58 is secured to the outer end of the shaft and is adapted to have a swinging or oscillating movement imparted thereto through a pitman 59 (or other suitable device) derivin its power'from any suitable source.

ilounted on shaft 43 between hanger 53 and the adjacent eccentric is a ratchet wheel 60, the hub whereof is in interlocking engagement with the adjacent eccentric element 39. The teeth of the wheel are preferably of V-forni as illustrated with the adjacent faces of the adjacent teeth standin at substantiallyv right angles to each ot er so that the impelling dog or ratchet 61 (see Fig. 4) will take a full and even bearing Vagainst the tooth with which it may contact. Said dog is formed integrallyy wit-h and extends from a pair of laterally extending wings 62 swiveled upon a sup- 4 mounted in the outer end of a rocker arm 64.` The dog is held in engagement with the wheel through the 65 encircling the pin, one

end bearing against the dog and the other going description.

against a lug 66 struck up from the rocker arm. A similarly formed stop dog or pawl 67 is mounted on a pin 68 secured to hanger 53, the stop lug 69 for the spring T0 being struck up from the hanger. The rocker arm 64, (see Fig. 2) is provided with a hub 71 which encircles sleeve 52 and is attachedI thereto in any suitable manner as by screws 72 or by means of a pressed lit. as the sleeve 52is driven 'or oscillated by shaft 56 the rocker arm will be moved back and forth thereby and as a consequence a step by step movement will be imparted to the ratchet wheel and consequently to the eccentrics thereby actuating the piston or pumps. It has been demonstrated in actual practice that with a pawl and ratchet mechanism of the type above set forth that there is nno slippage and the drive is therefore positive and accurate. A bracket 73 (see Fig. 2) is secured to hanger 53 and a strainer 7 4 is held thereby, the same having a reduced upper` end 7 5 producing a shoulder which takes against the under face of cover 3. A suitable cap 76 is provided for the upwardly extending end 75.

.It is thought that the operation of the lubricator will be understood from the fore- Suftce it to add that the same ma be regulated so that each pump element discharge the desired quantity of oil and that such action is positive. When Inasmuch for any reason it is desired to remove and inspect the operative parts it is only necessary to remove the cover fastenings and bring' the cross ribs 47 and 54 to vertical position whereupon the cover may be raised withdrawing therewith the entire mechanism leaving the driving shafts or elements 49 and 56 in place.

In Figs. 10 to 13 inclusive, a modified form of plunger or piston isillustrated. Under this construction the vertically disposed discharge port or channel 38 is present, as is also the intake port or channel 35. The latter,V however, instead of communicating at its lower end with a circumferential way, as 36, is in communication with a passage or channel T7 which passes through the plunger body terminating in a port or opening 78 which is the equivalent in its action and function with the spill port or channel 37. Instead of forming the eccentric body in two parts, as 39 and 39a, as heretofore described, the construction shown in Fi 14 to 16 inclusive may be employed. Lnder this construction thc eccentric is formed of a single piece or casting 79, the end being provided respectively with the notches 80 and lugs 81, as underthe former construction. The body is provided with an enlargement 82 in which is formed an eccentric and laterallv inclined groove or seat for the reception of the strap. The strap is in this in- `stance formed of two pieces (see Fig. 16) a yoke 83 having trunnions 84 and a iller block 85, the yoke being provided with downwardly extending fingers 86, preferably offset, which take into offset seats 87 formed in the block 85. The elements 83 and 85 may be secured together in any suitable manner, as by rivets passed through openings formed in lthe overlapping port-ions of the members. or they may be secured by electric spot welding. The strap thus formed is connected to the piston or plunger` of the pump through the medium of the two-partyoke 41 which is journaled upon the ends of the pivoted blocks 42 mounted in the lower end of the piston.

It will be understood, of course, that in the broader aspect of the invention 1 do not desire to be limited to the specific means shown for actuating the lubricator, as any suitable form of driving mechanism may be employed and varied according to the service conditions which obtain.

Vhat is claimed is:

1. 1n a lubricator, the combination of a reservoir for the lubricant; a removable cover therefor; lubricant forcing mechanism suspended from said coverg'actuating means for said mechanism extending into the reservoir; and a sliding coupler between said means and mechanism and serving to connect' the same.

2. In a force feed lubricator, the combina.-

' rable connection intermediate said shaft and the eccentric, whereby the cover and the parts carried thereby may be moved and as readily replaced.

3. In a force feed.lubricator, the combination of a reservoir for the lubricant; a removable cover therefor; a pair of'oppositely disposed actuating stub shafts extending into the reservoir; an intermediate shaft; means attached to the cover for supporting the intermediate shaft; a pump suspended from the cover; an eccentric for the pump mounted on the intermediate shaft; and sep arable connections between the eccentric and the actuating stub shafts.

4. In a force feed lubricator, the combinareadily retion of a reservoir adapted to hold the lubri.

cant; a cover therefor, pumps secured to the under face of the cover, the discharge ports whereof are in communication with the parts to be lubricated; eccentrics for operating said pumps; hangers extending downwardly from the cover; ashaft upon which the eccentrics are mounted; sleeves carried by the hangers and forming bearings for the shaft; a stud shaft mounted in a fixed bearing in the side wall of the reservoir; and readily detachable connections between said stub shaft and the adjacent sleeve whereby upon removal of the cover the various elements of the structure will be drawn from the reservoir.

5. In a force feed lubricator, the com-bination of a reservoir; a cover; a plurality of pumps `sup-ported from the under side of the cover; a pair yof oppositely disposed stub shafts extending inwardly through the side walls of the reservoir; hangers extending downwardly from the cover; a sleeve mounted in each of said hangers, said sleeves having a. readily disengageable connection with the stub shafts aforesaid; a shaft mounted in the sleeves; a ratchetwheel mounted upon the shaft adjacent one of said sleeves; a rocker arm secured to said. sleeve; a pawl carried by the rocker arm and adapted to engage the ratchet'wheel; an eccentric for each pump mounted on the last named shaft; and driving connections between said eccentrics and between the eccentrics and the ratchet wheel and the sleeve next adjacent said eccentrics.

6. ln a force feed lubricator, the combination of a reservoir adapted to contain the 4lubricant to be forced to the bearings to be lubricated; a pair of hangers secured to the under face of the cover projecting downwardly into the reservoir when the cover is in place; a stub shaft extending inwardly through a fixed bearing located at one side of the reservoir; a sleeve mounted in the hanger adjacent said stub shaft and having a sliding interengagementV therewith; a crank mounted on the stub shaft for manual actuation thereof; asecond stub shaft mounted in a fixed bearing located in the opposite wall of the reservoir from that of the first named shaft; a second sleeve mounted in the other hanger, said sleeve having a sliding interengagement with said stub shaft; a third shaft supported by said sleeves and extending across the space between the same; a. ratchet wheel mounted loosely upon said last named shaft; a rocker arm secured to that sleeve adjacent the ratchet wheel; a pawl carried by'the arm and cooperating with the ratchet wheel; an eccentric for each pump mounted upon the third named shaft; and connectionsbetween the eccentrics, the ratchet wheel and the first mentioned sleeve.

7. ln a force feed lubricator, the combination of a cylinder having intake, exhaust and spill ports formed therein; a sleeve mounted within "said cylinder and adjustable lengthwise thereof to controli the capacity of the lubricator, said sleeve having ports which correspond to the ports aforesaid; a piston mounted in the sleeve, said piston being provided with a groove or channel in its side wall adjacent its upper end. a second groove or way formed in its opposite wall and extending downwardly to a point below the termination of the first mentioned groove, said last named groove opening into a way or channel extending through the piston; and means for actuat-4 ing the piston toimpart endwise and oscil- `latory movements thereto to bring the various ports and passages into cooperative relation.

8. In a force feed lubricator, the combination of a cylinder having intake,'exhaust and spill ports formed therein; a sleeve mounted within said cylinder and adjustable lengthwise thereof to control the capacity of the lubricator, said sleeve having ports `which correspond to the ports aforesaid; a piston mounted in the sleeve, said piston being provided with a groove or channel in its side wall adjacent its upper end, a second groove or way formed in its opposite wall and extending downwardly to a point below the termination of the first mentioned groove, said last named groove opening into a way or channel formed in the bod of the piston; and means for actuating t e piston to impart endwise and os- Y cillatory movement thereto to bring the various ports and passages into cooperativev relation.

9. In a force feed lubricator, the combination of a pump; an" operating shaft; a' yoke connected to the piston of the ump; and a wabbling eccentric actuated by the shaft and connected to a yoke, said eccentric comprising a bodymernber having an eccentrically positioned groove formed in the outer face thereof, said groove being in- @lined to the axis( of said body member; a

yoke shaped member having trunnions extending` laterally therefrom and connected to the first mentioned yoke, said member being seated within the groove aforesaid; and

a ller block interposed between the ends of 10 THOMAS E. COLEMAN. 

